[Bug 793419] New: pnm: seg fault with non power of 4 strides in pnmenc

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=793419

            Bug ID: 793419
           Summary: pnm: seg fault with non power of 4 strides in pnmenc
    Classification: Platform
           Product: GStreamer
           Version: git master
                OS: All
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: patcherwork at gmail.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

Created attachment 368303
  --> https://bugzilla.gnome.org/attachment.cgi?id=368303&action=edit
Example video frame that does not countain padding

I have found a segmentation fault with pnmenc caused due to the input frames
not being handled as videobuffers. The stride of the input was calculated using
the videoinfo collected from the caps. This defaults to the stride being a
power of 4. If the input frames do not contain padding and do not have a width
that is a multiplier of 4, the pnmenc would segment.

I am attaching an example videoframe and a pipe to verify the patch:

gst-launch-1.0 filesrc location= 1022x1024_rgb24_no_padding ! rawvideoparse
format=rgb width=1022 height=1024 plane-strides='<3066>' ! pnmenc ! filesink
location=dump.pnm

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